CN105200835A - Method for producing natural color life paper by means of bio-enzyme preprocessing and alkaline method wheat straw pulping - Google Patents
Method for producing natural color life paper by means of bio-enzyme preprocessing and alkaline method wheat straw pulping Download PDFInfo
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- CN105200835A CN105200835A CN201510594138.3A CN201510594138A CN105200835A CN 105200835 A CN105200835 A CN 105200835A CN 201510594138 A CN201510594138 A CN 201510594138A CN 105200835 A CN105200835 A CN 105200835A
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- biology enzyme
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- 238000000034 method Methods 0.000 title claims abstract description 51
- 239000010902 straw Substances 0.000 title claims abstract description 41
- 241000209140 Triticum Species 0.000 title claims abstract description 38
- 235000021307 Triticum Nutrition 0.000 title claims abstract description 38
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 30
- 238000004537 pulping Methods 0.000 title claims abstract description 19
- 238000007781 pre-processing Methods 0.000 title abstract description 8
- 230000008569 process Effects 0.000 claims abstract description 29
- 238000005406 washing Methods 0.000 claims abstract description 25
- 229920005610 lignin Polymers 0.000 claims abstract description 15
- 238000012216 screening Methods 0.000 claims abstract description 10
- 238000000746 purification Methods 0.000 claims abstract description 9
- 238000010411 cooking Methods 0.000 claims abstract description 8
- 238000004061 bleaching Methods 0.000 claims abstract description 5
- 238000002360 preparation method Methods 0.000 claims abstract description 5
- 238000001125 extrusion Methods 0.000 claims abstract description 3
- 108090000790 Enzymes Proteins 0.000 claims description 44
- 102000004190 Enzymes Human genes 0.000 claims description 44
- 239000002002 slurry Substances 0.000 claims description 22
- 229910052760 oxygen Inorganic materials 0.000 claims description 18
- 239000001301 oxygen Substances 0.000 claims description 18
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 17
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims description 8
- 239000003513 alkali Substances 0.000 claims description 8
- 238000009835 boiling Methods 0.000 claims description 8
- 238000006243 chemical reaction Methods 0.000 claims description 8
- 229920002472 Starch Polymers 0.000 claims description 6
- 239000008107 starch Substances 0.000 claims description 6
- 235000019698 starch Nutrition 0.000 claims description 6
- 241000209082 Lolium Species 0.000 claims description 5
- 238000010009 beating Methods 0.000 claims description 5
- 239000002994 raw material Substances 0.000 claims description 5
- 230000029087 digestion Effects 0.000 claims description 4
- 239000012530 fluid Substances 0.000 claims description 4
- 238000000605 extraction Methods 0.000 claims description 3
- 230000035484 reaction time Effects 0.000 claims description 3
- 238000004513 sizing Methods 0.000 claims description 3
- 238000009991 scouring Methods 0.000 claims description 2
- 238000009955 starching Methods 0.000 claims 1
- 239000000463 material Substances 0.000 abstract description 6
- 230000006378 damage Effects 0.000 abstract description 2
- 239000003337 fertilizer Substances 0.000 abstract description 2
- 238000000227 grinding Methods 0.000 abstract description 2
- 230000000593 degrading effect Effects 0.000 abstract 1
- 239000010865 sewage Substances 0.000 abstract 1
- 229940088598 enzyme Drugs 0.000 description 34
- 238000005516 engineering process Methods 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 244000025254 Cannabis sativa Species 0.000 description 3
- 230000015556 catabolic process Effects 0.000 description 3
- 238000006731 degradation reaction Methods 0.000 description 3
- 229920002488 Hemicellulose Polymers 0.000 description 2
- 229920002678 cellulose Polymers 0.000 description 2
- 239000001913 cellulose Substances 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 238000012856 packing Methods 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- 241000883966 Astrophytum capricorne Species 0.000 description 1
- 108010059892 Cellulase Proteins 0.000 description 1
- 235000014676 Phragmites communis Nutrition 0.000 description 1
- 229920001131 Pulp (paper) Polymers 0.000 description 1
- 229920002522 Wood fibre Polymers 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 229940106157 cellulase Drugs 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 238000010790 dilution Methods 0.000 description 1
- 239000012895 dilution Substances 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000005499 meniscus Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- KSSNXJHPEFVKHY-UHFFFAOYSA-N phenol;hydrate Chemical compound O.OC1=CC=CC=C1 KSSNXJHPEFVKHY-UHFFFAOYSA-N 0.000 description 1
- 238000002203 pretreatment Methods 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 239000002025 wood fiber Substances 0.000 description 1
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Abstract
The invention discloses a method for producing natural color life paper by means of bio-enzyme preprocessing and alkaline method wheat straw pulping and belongs to the technical field of papermaking. The method mainly comprises the steps of bio-enzyme preprocessing and alkaline method pulping and making, wherein the bio-enzyme preprocessing comprises wet method material preparation, bio-enzyme preprocessing and wheat straw extrusion performed after preprocessing, and the alkaline method pulping and making comprises intermittent cooking, thick pulp countercurrent washing, screening and purification washing, pulp grinding and making. Bio-enzyme is adopted for degrading lignin, wheat straw is preprocessed, the method is simple, no pollution is caused to the environment, no bleaching process is needed in the production process, manpower and material resources and the production cost are saved, and meanwhile injuries caused by the living paper producing and bleaching processes to human body health are reduced. A produced preprocessing solution and black liquor can be recycled for producing fertilizer, and the sewage treatment cost is greatly reduced.
Description
Technical field
The invention belongs to pulp technology for making paper, particularly a kind of with the method for biology enzyme preliminary treatment+alkaline process ryegrass pulping production true qualities paper for daily use.
Background technology
Ningxia has abundant stalk, in quantity, and non-wood-fiber (comprising wheat straw, straw, reed, cornstalk etc.) resource relative abundance.Current Ning Xiachuan district crop acreage has reached 1202.4 ten thousand mu, can produce nearly 1,300,000 tons of agricultural crop straw.The digestion process in paper mill is exactly that general chemical pulping, not only will use various chemicals by chemicals stripping, the process removing lignin now, and cost is high, energy consumption is large.And adopt bio-enzyme degradation lignin, carry out preliminary treatment to wheat straw, method is simple, and environmentally safe, becomes low molecule lignin by the lignin degradation of wheat straw, add lignin stripping and by the ability of extracting, thus realize lignin and cellulose, being separated of hemicellulose.Pretreated wheat straw adds appropriate alkali lye again, utilizes alkaline process to obtain slurry.The application of this technology avoids fiber and acutely damages, and improve yield, fibre strength is improved.Slurry after black liquor preextraction, then carries out oxygen delignification, and after washing and screening, after defibrination, send into paper machine and manufacture paper with pulp, final production goes out true qualities paper for daily use.Only have at present and produce fluting medium use biological enzyme technology, also do not find to use biology enzyme preliminary treatment to combine with soda pulping process, and use Oxygen Delignification of Fast-Growing to carry out the process of production true qualities paper for daily use.
Summary of the invention
The object of the invention is, for also not having biology enzyme preliminary treatment to combine with soda pulping process the technological gap of productive life paper using in prior art, to provide a kind of with the method for biology enzyme preliminary treatment+alkaline process ryegrass pulping production true qualities paper for daily use.Its procedure is different from present wheat straw pulp paper-making method, and this method mainly carries out Biological Pretreatment to wheat straw raw material, and pretreated wheat straw adds the alkali charge far below common boiling again, and the thick starch degree of system is the high yield pulp of K=16-20.We's legal system pulp yield higher than the yield of common alkaline wheat straw pulp, the slurry after boiling extrudes through press master, and after squeezing, slurry carries out oxygen delignification again after adverse current, removes lignin further, produces the slurry of applicable production true qualities paper for daily use.Slurry after oxygen takes off is again through purification screening washing, and then defibrination is manufactured paper with pulp packed products paper.
Technical scheme of the present invention is such: a kind of with the method for biology enzyme preliminary treatment+alkaline process ryegrass pulping production true qualities paper for daily use, mainly comprise the preliminary treatment of wheat straw biology enzyme and soda pulping process to manufacture paper with pulp two parts, wherein, biology enzyme preliminary treatment comprises wet feed preparation, biology enzyme preliminary treatment, extrusion process.Soda pulping process is manufactured paper with pulp and is comprised: batch cooking, slightly starch countercurrent washing, screening purification and washing, defibrination, manufacture paper with pulp.
The pretreated technological parameter of biology enzyme is:
Biology enzyme consumption: 3%(with wheat straw oven-dry weight for benchmark)
Biology enzyme pretreatment temperature: 50 DEG C
Wheat straw mass dryness fraction: 18-20%.
Biology enzyme pretreatment time: 50h (wheat straw and biology enzyme carry out reaction temperature reach 55 DEG C start timing), condition: 8≤PH≤10; T=55-57 DEG C
Mass dryness fraction: 18-20% after press master squeezes.
The technological parameter that under above-mentioned condition, slurrying is manufactured paper with pulp:
Dress pot amount: 7000 ± 100 kilograms/ball (over dry gauge);
Boiling alkali charge: 9%;
Cooking pressure: 0.65MPa;
Liquor ratio: 1:2.9-3.3;
Goal liquor strength: 65 ± 2g/l,
Fluid temperature: >=80 DEG C;
Digestion time: 3 hours
Thick starch degree: k=16-20(permanganate number),
Oxygen reaction tower temperature: 80-100 DEG C, the reaction time: 1h
Paper machine sizing concentration: 0.15-0.35%
Defibrination beating degree: 40 ± 2
0sR
Copy paper is quantitative:
True qualities paper extraction is quantitative: 15 ± 0.5g/m
2; True qualities coil paper is quantitative: 14.5 ± 0.5g/m
2
True qualities tissue is quantitative: three layers: 14.5 ± 0.5g/m
2; Two-layer: 18.5 ± 0.5g/m
2.
The present invention has following remarkable result:
1, special cellulase treatment storehouse is adopted to carry out biology enzyme preliminary treatment to wheat straw raw material.The lignin degradation of wheat straw is become low molecule lignin, add lignin stripping and by the ability of extracting, thus realize lignin and cellulose, being separated of hemicellulose.Alkali charge reduces, and without the need to carrying out conventional alkali collection, can remove burning zone and causticization section.
2, the paper for daily use that the present invention produces is true qualities paper for daily use, and the countercurrent washing of thick slurry carries out oxygen delignification later, removes lignin further, reaches the condition manufacturing true qualities household paper pulp.Without the need to bleaching process in production process, save manpower and materials and production cost, produced without AOX (adsorbable organochlorine), more environmental protection, more healthy.
3, the black liquor of the pretreated treatment fluid of biology enzyme and preextraction can be salvaged production fertilizer.Additionally increase income, achieve the comprehensive utilization of the full element of wheat straw.
Detailed description of the invention
The detailed description of the invention of technical solution of the present invention is divided into biology enzyme preliminary treatment and soda pulping process to manufacture paper with pulp two parts:
1. biology enzyme preliminary treatment
1.1 wet feed preparations:
The wheat straw that purchase comes, is transported to chaffcutter and cuts into the long tablet of 15-30mm, after the dedusting of goat's horn deduster, with belt conveyer conveying, dewaters, to next procedure after rinsing machine, waterpower grass washing machine are washed.
1.2 biology enzyme preliminary treatment:
Tablet after the washing dehydration that wet feed preparation comes is delivered to biology enzyme preliminary treatment storehouse through belt conveyer, according to pretreating process, biology enzyme preliminary treatment is carried out to the wheat straw after washing, the pretreated wheat straw of biology enzyme enters single-screw press master and extrudes, wheat straw mass dryness fraction after extruding is 18-20%, is delivered to surge bunker and treats that boiling uses.
1.3 capital equipments:
Roller-type hay cutter: 12t/h
Rinsing machine: 8m
3
Waterpower grass washing machine: 60m
3
Inclined helix dehydrator; 200t/d
Biology enzyme pre-processing device: 9000m
3
Single-screw press master: ZLYA1100.
1.4 biology enzyme pretreating process flow processs:
Wheat straw-roller-type hay cutter-deduster-belt conveyer-rinsing machine-waterpower grass washing machine---inclined helix dehydrator-belt conveyer-biology enzyme preliminary treatment storehouse-single-screw press master-surge bunker.
1.5 biology enzyme parameter of pre-treatment process:
Biology enzyme consumption: 3%(with wheat straw oven-dry weight for benchmark)
Biology enzyme pretreatment temperature: 50 DEG C
Wheat straw mass dryness fraction: 18-20%
Biology enzyme pretreatment time: 50h (wheat straw and biology enzyme carry out reaction temperature reach 55 DEG C start timing), condition: 8≤PH≤10; T=55-57 DEG C
Mass dryness fraction: 18-20% after press master squeezes.
2. soda pulping process is manufactured paper with pulp true qualities paper for daily use
2.1 batch cookings:
After the pre-dipping machine of spiral, packer, enter rotary spherical digester after the wheat straw sheet come from biology enzyme pretreatment workshop and cooking liquor mix and carry out boiling.Well-done thick slurry spurts to jetting storehouse, and the bottom of jetting storehouse adopts spiral propeller, and Straw Pulp is pushed into single-screw press master, black liquor is extruded by press master, enters Cu Jiangzhu pond, underground after thick slurry thin phenol water dilution.
2.2 thick plasm scourings:
The thick slurry of underground reserve pit is with being pumped to 2m
2vanning is roughly selected, and the slurry after roughly selecting is through the flat valve drum vacuum pulp washer group countercurrent washing of 4 series connection.Straw Pulp after washing enters next procedure.
2.3 oxygen delignification
Dense pump standpipe during first wheat straw slurry after washing enters, through in be densely pumped into medium-consistency pulp mixer, complete chemicals here, steam mixes with slurry, the slurry mixed enters oxygen delignification reaction tower, react 1h at 80 ~ 100 DEG C after, sprayed into equably in spraying pot by drain valve.
2.4 screening purification and washing:
Because natural color pulp is without bleaching, for reducing the dust in slurry, the slurry after oxygen delignification carries out double purification after carrying out dust closed-type screening again.Enter one-level three sections of conical refiners after being diluted by the slurry clear water of pulp storage tower, and then concentrated by cylinder after enter and thicken stock tank, again delivered into after leave from office wash engine washs by stock pump and enter reserve pit, manufacture paper with pulp for making beating.
2.5 making beating are manufactured paper with pulp
Slurry after screening washing is after fiberizer mill, and be delivered to the pond of manufacturing paper with pulp of meniscus 3600/1000 paper machine, pump dexter feeder is manufactured paper with pulp.Difference according to production kind carries out processing and packing.
2.6 capital equipments:
Rotary spherical digester: ZCQ40m
3
Single-screw press master: ZLYA1100
Flat valve drum vacuum pulp washer: 40m
3, 60m
3
Medium-consistency pulp mixer: material SS316L
Oxygen reaction tower: material SS316L, 50m
3
Oxygen spraying pot: material SS316L, 150m
3
Middle dope platen grinding machine: ZDPM500
Paper machine: 1000m/min crescent shaping toilet paper machine
Bobbin cutter: Ya Saili bobbin cutter 1200m/min
Soft pump: SOFIA-1900 is complete, and sharp soft pumping produces unit
High speed winder: YD-PL350C
Large convolution cutting machine: LS-160.
2.7 technological processes:
Pretreated wheat straw-rotary spherical digester-jetting storehouse-single-screw press master-underground the reserve pit of biology enzyme-wash front stock tank-2m
2vanning-4 series plane valve drum vacuum pulp washing machine group-oxygen delignification-outer-flowing type pressurized screen-wash engine-double purification system-thicken stock tank-wash engine washing-reserve pit-fiberizer-paper machine is manufactured paper with pulp-finished product processing and packing.
2.8 technological parameters:
Dress pot amount: 7000 ± 100 kilograms/ball (over dry gauge);
Boiling alkali charge: 9%;
Cooking pressure: 0.65MPa;
Liquor ratio: 1:2.9-3.3;
Goal liquor strength: 65 ± 2g/l,
Fluid temperature: >=80 DEG C;
Digestion time: 3 hours
Thick starch degree: k=16-20(permanganate number),
Oxygen reaction tower temperature: 80-100 DEG C, the reaction time: 50min
Paper machine sizing concentration: 0.15-0.35%
Defibrination beating degree: 40 ± 2
0sR
Copy paper is quantitative:
True qualities paper extraction is quantitative: 15 ± 0.5g/m
2; True qualities coil paper is quantitative: 14.5 ± 0.5g/m
2
True qualities tissue is quantitative: three layers: 14.5 ± 0.5g/m
2; Two-layer: 18.5 ± 0.5g/m
2.
The present invention with the wheat straw of Ningxia and periphery for raw material, employ new technology-biology enzyme preliminary treatment+soda pulping manufactures paper with pulp paper for daily use, have passed through pilot production repeatedly, through constantly groping to improve, can produce now the true qualities fine tissue meeting light industry standard.
Claims (3)
1., with the method for biology enzyme preliminary treatment+alkaline process ryegrass pulping production true qualities paper for daily use, mainly comprise biology enzyme preliminary treatment and slurrying and to manufacture paper with pulp two parts, wherein, biology enzyme preliminary treatment comprises: wet feed preparation, biology enzyme preliminary treatment, extrusion process; Slurrying is manufactured paper with pulp and is comprised: batch cooking, countercurrent washing, oxygen delignification, screening purification and washing, pull an oar, manufacture paper with pulp; It is characterized in that first carrying out biology enzyme preliminary treatment to wheat straw raw material, under pretreated wheat straw adds the condition far below the alkali charge of common boiling again, under the condition comparatively relaxed, obtained thick starch degree is the high yield pulp of K=16-20.The pulp yield that this law obtains is higher than the yield of common alkaline wheat straw pulp, and high yield pulp after press master extruding, then through slightly starching countercurrent washing, afterwards again through oxygen delignification, removes lignin further, the obtained slurry being applicable to production true qualities paper for daily use.Slurry after oxygen takes off is again through screening purification and washing, and the true qualities slurry after washing is through defibrination, and paper machine is manufactured paper with pulp, packed products paper.
The pretreated technological parameter of biology enzyme is:
Biology enzyme consumption: 3%(with wheat straw oven-dry weight for benchmark)
Biology enzyme pretreatment temperature: 50 DEG C
Wheat straw mass dryness fraction: 18-20%
Biology enzyme pretreatment time: 50h (wheat straw and biology enzyme carry out reaction temperature reach 55 DEG C start timing), condition: 8≤PH≤10; T=55-57 DEG C
Mass dryness fraction: 18-20% after press master squeezes.
2. method according to claim 1, carrying out the technological parameter that slurrying manufactures paper with pulp under it is characterized in that above-mentioned process conditions is:
Dress pot amount: 7000 ± 100 kilograms/ball (over dry gauge);
Boiling alkali charge: 9%;
Cooking pressure: 0.65MPa;
Liquor ratio: 1:2.9-3.3;
Goal liquor strength: 65 ± 2g/l,
Fluid temperature: >=80 DEG C;
Digestion time: 3 hours
Thick starch degree: k=16-20(permanganate number),
Oxygen reaction tower temperature: 80-100 DEG C, the reaction time: 1h
Paper machine sizing concentration: 0.15-0.35%
Defibrination beating degree: 40 ± 2
0sR
Copy paper is quantitative:
True qualities paper extraction is quantitative: 15 ± 0.5g/m
2; True qualities coil paper is quantitative: 14.5 ± 0.5g/m
2
True qualities tissue is quantitative: three layers: 14.5 ± 0.5g/m
2; Two-layer: 18.5 ± 0.5g/m
2.
3. method according to claim 1, it is characterized in that the inventive method uses with wheat straw is raw material, the production pulping process combined with soda pulping process by biology enzyme preconditioning technique, and after thick plasm scouring, use oxygen delignification further to remove lignin, after carrying out screening purification and washing afterwards, to manufacture paper with pulp true qualities paper for daily use for copy paper, period is without bleaching process.True qualities wheat straw slurry after washing through defibrination, manufacture paper with pulp into paper.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510594138.3A CN105200835A (en) | 2015-09-18 | 2015-09-18 | Method for producing natural color life paper by means of bio-enzyme preprocessing and alkaline method wheat straw pulping |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510594138.3A CN105200835A (en) | 2015-09-18 | 2015-09-18 | Method for producing natural color life paper by means of bio-enzyme preprocessing and alkaline method wheat straw pulping |
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| Publication Number | Publication Date |
|---|---|
| CN105200835A true CN105200835A (en) | 2015-12-30 |
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|---|---|---|---|
| CN201510594138.3A Pending CN105200835A (en) | 2015-09-18 | 2015-09-18 | Method for producing natural color life paper by means of bio-enzyme preprocessing and alkaline method wheat straw pulping |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106676925A (en) * | 2017-02-09 | 2017-05-17 | 青川县金丰竹业开发有限公司 | Immersion-free papermaking process capable of taking plant stalks as raw materials |
| CN107938417A (en) * | 2017-11-29 | 2018-04-20 | 何永庆 | The method that organic fertilizer is prepared using pulping waste liquor |
| CN107964819A (en) * | 2017-11-29 | 2018-04-27 | 何永庆 | The method of low alkaline boiling production true qualities paper pulp |
| CN108221436A (en) * | 2018-03-28 | 2018-06-29 | 宁夏紫荆花纸业有限公司 | A kind of preparation method of natural color pulp paper |
| CN112761013A (en) * | 2020-12-31 | 2021-05-07 | 齐鲁工业大学 | Method for preparing natural-color biomechanical pulp by treating wheat straw with hot steam and biological enzyme and fully utilizing byproducts |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107938417A (en) * | 2017-11-29 | 2018-04-20 | 何永庆 | The method that organic fertilizer is prepared using pulping waste liquor |
| CN107964819A (en) * | 2017-11-29 | 2018-04-27 | 何永庆 | The method of low alkaline boiling production true qualities paper pulp |
| CN108221436A (en) * | 2018-03-28 | 2018-06-29 | 宁夏紫荆花纸业有限公司 | A kind of preparation method of natural color pulp paper |
| CN112761013A (en) * | 2020-12-31 | 2021-05-07 | 齐鲁工业大学 | Method for preparing natural-color biomechanical pulp by treating wheat straw with hot steam and biological enzyme and fully utilizing byproducts |
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